Year	Number
2000	960
2001	940
2002	920
2003	980
2004	910
2005	1000
2006	980
2007	960
2008	940
2009	970
2010	980
2011	960
2012	940
2013	910
2014	850
2015	900
2016	900
2017	910
2018	800
2019	760
2020	760